ICN网内解析自适应地址选择方法

An Adaptive Address Selection Method for In-network Name Resolution in ICN

在信息中心网络中,名字解析系统负责标识与网络地址之间的映射关系的建立、维护和发布。信息中心网络中内容的多副本特性导致标识到地址的“一对多”的映射关系,带来选择适当解析地址的挑战。网内解析作为一种系统驱动的解析模式,将解析能力内生于可编程网络设备中,不可避免地需要进行选址操作。现有的选址方法不能同时提供网络和服务端负载均衡的保障,传统的直接选择、轮询等策略造成解析链路拥塞或服务端负载不均衡。为解决上述问题,本文提出一种自适应的地址选择方法,充分利用软件定义网络的网络感知和处理能力,综合网络状态信息和地址解析频率信息,同时实现服务端与网络链路的负载均衡。仿真结果证明该方法在负载均衡方面的优越性。提出的算法为未来的研究提供新的方向与思路。

In the Information-Centric Networking(ICN)architecture,the Name Resolution System(NRS)is responsible for establishing,maintaining,and publishing the mapping relationship between names and network addresses.The presence of multiple copies of content in ICN results in a“one-to-many”mapping relationship between names and addresses,presenting a challenge in determining the appropriate resolution address.In-network resolution,serving as a system-driven resolution model,integrates resolution capability within programmable network devices,necessitating address selection operations.Current address selection methods fail to offer simultaneous assurances for network and server load balancing.Conventional approaches like direct selection,round-robin,and other strategies may lead to resolution link congestion or uneven server load.To address these issues,this paper proposes an adaptive address selection method that fully leverages the network awareness and processing capabilities of SDN,integrating network status and address resolution frequency information,while achieving load balancing between the server and network links.Simulation results demonstrate the superiority of this method in terms of load balancing.Our approach provides new directions and insights for future research.